Latest Juniper JN0-643 Dumps Exam Practice Questions Download Free Try

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QUESTION 1
You are asked to set up 802.1X port authentication for all access ports on your EX Series switch. You have a device that does not support 802.1X supplicants and you must ensure JN0-643 this device is authenticated. You must also ensure that no unnecessary delay occurs when authenticating this device.
Which statement is correct?
A. You should enable MAC RADIUS on the interface and use 802.1X multiple mode.
B. You should enable MAC RADIUS on the interface and statically add the MAC address to the 802.1x configuration.
C. You should enable MAC RADIUS on the interface and include the restrict parameter.
D. You should enable MAC RADIUS on the interface and include the disable parameter.
Correct Answer: C

QUESTION 2

Click the Exhibit button.
A contractor needs to connect a laptop to your company network, but your company has no wirelessaccess and each office has only a single network port for an employee laptop. You have an IP phone with a data port available and you have access to the switch connected to it. You can also add the JN0-643 contractor’s MAC address to the RADIUS server database.
Referring to the exhibit, which three commands will allow access? (Choose three.)
A. set protocols dot1x authenticator authentication-profile-name radius_profile interface ge- 0/0/16.0 macradius
B. set interfaces ge-0/0/16.0 family ethernet-switching port-mode trunk
C. set interfaces ge-0/0/16.0 family ethernet-switching vlan members contractor
D. set protocols dot1x authenticator authentication-profile-name radius_profile interface ge- 0/0/16.0 supplicant multiple
E. set interfaces ge-0/0/16.0 family ethernet-switching vlan members all
Correct Answer: ACD

QUESTION 3
Your company uses 802.1X to authenticate your users. You want to provide access to the Internet when users cannot authenticate on the RADIUS server or when the RADIUS server becomes unreachable.
Which two methods accomplish this goal? (Choose two.)
A. using a captive portal
B. using a server fail fallback
C. using MAC RADIUS
D. using a guest VLAN
Correct Answer: BD

QUESTION 4
Your company recently implemented Layer 2 authentication and access control to secure users accessing the corporate network. You implemented 802.1X, MAC RADIUS, and a captive portal to JN0-643 support a variety of hosts on the network. Senior management is concerned that valid users might be authenticated incorrectly on the network and they ask you questions about how these different access technologies are used simultaneously.
Which three statements are correct? (Choose three.)
A. MAC addresses that are part of a MAC address whitelist or a static MAC list are authenticated before any other authentication protocol is invoked.
B. Captive portal is a supported fallback option for 802.1X.
C. If the authentication server fails to respond to access requests and both a server-fail and guest VLAN are configured correctly, the server-fail VLAN takes precedence over the guest VLAN.
D. Captive portal can only be configured on Layer 3 interfaces.
E. If a port is configured with 802.1X and the host does not respond to EAP requests, no other authentication protocol can authenticate the host.
Correct Answer: ABC

QUESTION 5
In your 802.1X-enabled network, a RADIUS server fails to respond or authenticate a device.
On an EX Series switch, what are three supported actions? (Choose three.)
A. Traffic can be allowed.
B. Traffic can be denied.
C. Traffic can be redirected to another subnet.
D. Traffic can be redirected to another VLAN.
E. Traffic can be redirected to another port.
Correct Answer: ABD

QUESTION 6
Your company makes extensive use of JN0-643 VSTP in your network for loop protection. The network is at the VSTP VLAN limit and must protect additional VLANs.
Which command allows you to protect additional VLANs?
A. set protocols mstp interface all
B. set protocols vstp vlan all
C. set protocols vstp vlan-group
D. set protocols rstp
Correct Answer: D

QUESTION 7
You are asked to set up 802.1X port authentication for all access ports on JN0-643 your EX Series switch. You must ensure that only one user is allowed to authenticate per port and all other attempts are denied.
Which supplicant mode must be used?
A. single mode
B. single-secure mode
C. default mode
D. multiple mode
Correct Answer: B

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